28694898 has 28 divisors (see below), whose sum is σ = 64537278. Its totient is φ = 9564480.

The previous prime is 28694849. The next prime is 28694899. The reversal of 28694898 is 89849682.

It can be written as a sum of positive squares in only one way, i.e., 16184529 + 12510369 = 4023^2 + 3537^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (28694899) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 8383 + ... + 11298.

Almost surely, 2^28694898 is an apocalyptic number.

28694898 is an abundant number, since it is smaller than the sum of its proper divisors (35842380).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28694898 is an equidigital number, since it uses as much as digits as its factorization.

28694898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19701 (or 19686 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 54.

The square root of 28694898 is about 5356.7618950258. The cubic root of 28694898 is about 306.1504450526.

It can be divided in two parts, 28694 and 898, that added together give a palindrome (29592).

The spelling of 28694898 in words is "twenty-eight million, six hundred ninety-four thousand, eight hundred ninety-eight".